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      <title>为什么紧张时会胃痛：从脑肠轴到HPA轴的神经科学解密</title>
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      <description>深入解析紧张导致胃痛的神经科学机制。从Michael Gershon提出的肠神经系统&amp;#34;第二大脑&amp;#34;概念，到迷走神经80%传入纤维的双向通信，再到HPA轴激活后的CRH级联反应。系统阐述交感神经系统的血液重新分配、内脏高敏感性的中枢敏化机制、以及功能性消化不良患者50.4%焦虑共病率的临床证据。涵盖血清素95%肠道产生、CRH直接作用于胃肠平滑肌、压力性胃炎的病理生理、以及从心理干预到神经调节的治疗进展。</description>
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